CNT may be:
- Croatian National Theatre (Hrvatsko narodno kazalište)
- Central Nacional de Trabajadores, the National Workers' Central (Paraguay)
- Central Nacional de Televisão - television network established in Curitiba, Brazil, named today TVJB
- Confederación Nacional del Trabajo - National Confederation of Labor in Spain
- Confédération nationale du travail (CNT-F)
- Confédération Nigérienne du Travail, the Nigerien Confederation of Labour
- Carbon nanotube
- Computer Network Technology Corporation, an enterprise acquired by McData in January 2005
- The Columbia Non-neutral Torus experiment at Columbia University.
- The Center for Neighborhood Technology
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